.result-box.show{display:block;animation:slideIn .5s ease}.reveal-content.show{display:block;animation:slideIn .5s ease}.quiz-option.correct{background:#4ade80;color:#fff;border-color:#22c55e}.quiz-option.incorrect{background:#f87171;color:#fff;border-color:#dc2626}.timeline-detail.show{display:block;animation:slideIn .5s ease}.comparison-card.selected{background:rgba(255,255,255,.4);border-color:#fff}.progress-tracker{background:rgba(255,255,255,.2);border-radius:15px;padding:20px;margin:20px 0;backdrop-filter:blur(10px)}.progress-steps{display:flex;justify-content:space-between;align-items:center;margin:20px 0;flex-wrap:wrap}.progress-step{background:rgba(255,255,255,.3);width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:20px;color:#fff;transition:all .5s ease;cursor:pointer}.progress-step.completed{background:#4ade80;transform:scale(1.2)}